AGAWAM – Fire ripped through a 4,000-square-foot home under construction at 989 North Westfield St. early Saturday morning causing approximately $300,000 in damage.

Fire Department Lt. B.J. Calvi said the fire is being investigated by the department and the state fire marshal’s office.

He said when firefighters arrived at the scene at about 1:45 a.m., they could see heavy fire coming from the structure. He said the fire was under control by 5 a.m. It was called in by neighbors, he said.

Twenty firefighters responded; there were no injuries, Calvi said. West Springfield Fire Department provided station coverage.

“It was a difficult fire,” Calvi said.

The home is set back from the street, and the cold froze equipment, he said.